发明授权
- 专利标题： Aqueous polyurethane resin dispersion and process for preparing the same
- 专利标题（中）： 水性聚氨酯树脂分散体及其制备方法
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申请号： US13391188申请日： 2010-08-03
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公开(公告)号： US08841381B2公开(公告)日： 2014-09-23
- 发明人: Takeshi Yamada , Masahiro Naiki
- 申请人： Takeshi Yamada , Masahiro Naiki
- 申请人地址： JP Ube-Shi
- 专利权人： Ube Industries Ltd.
- 当前专利权人： Ube Industries Ltd.
- 当前专利权人地址： JP Ube-Shi
- 代理机构： Birch, Stewart, Kolasch & Birch, LLP
- 优先权： JP2009-190743 20090820; JP2010-158493 20100713
- 国际申请： PCT/JP2010/063087 WO 20100803
- 国际公布： WO2011/021500 WO 20110224
- 主分类号： C09D175/04
- IPC分类号： C09D175/04 ; C09D175/08
摘要：
An object of this invention is to obtain an aqueous polyurethane resin dispersion having excellent drying property, which can provide a coating film having high hardness. The aqueous polyurethane resin dispersion comprises a polyurethane resin obtained by reacting (a) a polyol compound, (b) a polyisocyanate compound, (c) an acidic group-containing polyol compound and (d) a chain-elongating agent, which is being dispersed in an aqueous medium, wherein the above-mentioned (a) polyol compound contains at least (a1) a polycarbonate polyol having an alicyclic structure at the main chain and (a2) a polymer polyol having a number average molecular weight of 500 to 5000 and having no alicyclic structure.
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